Problem on changing Background Color

Question

I used this code to change the JFrame background color~

frame.getContentPane().setBackground(Color.BLUE);

But It's not working 😕
Please help me🙏

Answer 1

I don't have any proper knowledge about JavaSE, but here I got something that possibly do the job

https://stackoverflow.com/questions/26810323/getcontentpane-setbackground-doesnt-seem-to-work